Create a normal user account, for example the user Administrator with the user name administrator (don't use the user name admin as it is a reserved name on Debian Lenny):

Next you must configure apt. Because you are using the Debian Lenny Netinstall CD which contains only a minimal set of packages, you must use a network mirror. Select the country where the network mirror that you want to use is located (usually this is the country where your Debian Lenny system is located):

Then select the mirror you want to use (e.g. ftp2.de.debian.org):

Unless you use an HTTP proxy, leave the following field empty and hit Continue:

Apt is now updating its packages database:

You can skip the package usage survey by selecting No:

We need a web server, DNS server, mail server, and a MySQL database, but nevertheless I don't select any of them now because I like to have full control over what gets installed on my system. We will install the needed packages manually later on. Therefore we just select Standard system and hit Continue: